Variable pitch and automations on an ancient Presto MRC-16!
Read here: https://agnewanalog.com/blog/2019/03/08/presto-mrc-16-variable-pitch-modification/
This started as a "can we just fix this broken piece" and escalated out of control, where the Flintstones enter the space age!
This kind of modification can of course also be implemented on Rek-O-Kut, RCA, and other similarly styled lathes!
Also building a new suspension unit with oil dashpot and provision for centerline adjustment, with mount for the usual mono heads as well as Caruso, Neumann, SC-99 or Agnew Analog stereo heads!
Everything is possible!
More soon...
Presto MRC-16 Variable Pitch and Automation Project
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~~~ Precision Mechanical Engineering, Analog Disk Mastering ~~~
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Re: Presto MRC-16 Variable Pitch and Automation Project
wow great work
Re: Presto MRC-16 Variable Pitch and Automation Project
Seriously amazing work 
Re: Presto MRC-16 Variable Pitch and Automation Project
If only it's creators could see what happened with their creation...
Re: Presto MRC-16 Variable Pitch and Automation Project
A suspension unit "toolpost" for holding the cutter head, with integrated dashpot.
This fully machined aluminum piece offers exceptional rigidity and positioning accuracy. It allows horizontal position adjustment to bring the stylus to the centerline, vertical adjustment for height, head tilt through the use of angled bars as in the Neumann head system, while the lateral alignment of the head is adjusted only once from the overhead assembly and remains accurate with no need to readjust each time the head is removed and replaced.
Many more pictures and details on the Agnew Analog Blog (https://agnewanalog.com/blog/2019/03/23/lab-report-an-improved-cutter-head-mounting-system-with-integrated-dashpot/) and website (http://agnewanalog.com/productsdiskmastering.shtml)!
Compatible with Neumann type heads and all other heads through the use of the Series 1400 range of cutter head mount adapters (http://agnewanalog.com/products/mountingadapter.shtml).
More soon!
This fully machined aluminum piece offers exceptional rigidity and positioning accuracy. It allows horizontal position adjustment to bring the stylus to the centerline, vertical adjustment for height, head tilt through the use of angled bars as in the Neumann head system, while the lateral alignment of the head is adjusted only once from the overhead assembly and remains accurate with no need to readjust each time the head is removed and replaced.
Many more pictures and details on the Agnew Analog Blog (https://agnewanalog.com/blog/2019/03/23/lab-report-an-improved-cutter-head-mounting-system-with-integrated-dashpot/) and website (http://agnewanalog.com/productsdiskmastering.shtml)!
Compatible with Neumann type heads and all other heads through the use of the Series 1400 range of cutter head mount adapters (http://agnewanalog.com/products/mountingadapter.shtml).
More soon!
You do not have the required permissions to view the files attached to this post.
~~~ Precision Mechanical Engineering, Analog Disk Mastering ~~~
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Re: Presto MRC-16 Variable Pitch and Automation Project
Many thanks, everyone! Here's the fully assembled suspension system:
Many more detailed pictures of the "making of" and description on the Agnew Analog Blog: https://agnewanalog.com/blog/2019/04/06/a-new-suspension-system-for-vintage-lathes/.
Teaser: We started a youtube channel as well and uploaded a short video of the suspension. Subscribe to receive notifications for new videos!
More soon...
Many more detailed pictures of the "making of" and description on the Agnew Analog Blog: https://agnewanalog.com/blog/2019/04/06/a-new-suspension-system-for-vintage-lathes/.
Teaser: We started a youtube channel as well and uploaded a short video of the suspension. Subscribe to receive notifications for new videos!
More soon...
You do not have the required permissions to view the files attached to this post.
~~~ Precision Mechanical Engineering, Analog Disk Mastering ~~~
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Re: Presto MRC-16 Variable Pitch and Automation Project
Wow! Great work as always! Can't wait to see what's next!
Re: Presto MRC-16 Variable Pitch and Automation Project
Thank you, boryo, more to come soon!
~~~ Precision Mechanical Engineering, Analog Disk Mastering ~~~
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Agnew Analog Reference Instruments: http://www.agnewanalog.com
-
soeffingodly
- Posts: 273
- Joined: Fri Jan 19, 2018 8:48 am
- Location: Florida, USA
Re: Presto MRC-16 Variable Pitch and Automation Project
Well done!
"I wasn't lying. Things I said later seemed untrue."
Re: Presto MRC-16 Variable Pitch and Automation Project
Looks like an Opcode66 Mono Cutterhead Rebuild to me...
Thought you were on the "bleeding edge" of transducer technology? Why have your head serviced by me? Hmm.
Thought you were on the "bleeding edge" of transducer technology? Why have your head serviced by me? Hmm.
Cutting, Inventing & Innovating
Groove Graphics, VMS Halfnuts, MIDI Automation, Professional Stereo Feedback Cutterheads, and Pesto 1-D Cutterhead Clones
Cutterhead Repair: Recoiling, Cleaning, Cloning of Screws, Dampers & More
http://mantra.audio
Groove Graphics, VMS Halfnuts, MIDI Automation, Professional Stereo Feedback Cutterheads, and Pesto 1-D Cutterhead Clones
Cutterhead Repair: Recoiling, Cleaning, Cloning of Screws, Dampers & More
http://mantra.audio
Re: Presto MRC-16 Variable Pitch and Automation Project
Indeed, it's my head serviced by youopcode66 wrote:Looks like an Opcode66 Mono Cutterhead Rebuild to me...
Thought you were on the "bleeding edge" of transducer technology? Why have your head serviced by me? Hmm.
Re: Presto MRC-16 Variable Pitch and Automation Project
Opcode66, apart from being involved in research and development projects pertaining to the bleeding edge of transducer design, I also have a day job doing work on any equipment a customer wishes me to work on, regardless of who made it or who did work on it in the past.
Good to confirm that it was your work on this head, I've been wondering...
I do not own this head or lathe, which is very often the case with a lot of the equipment I repair, modify, design and build, on behalf of customers from various corners of the world.
Some of it is publicly displayed because I find some aspect of the machines, or work done to it, to be particularly noteworthy, as with the suspension system and overhead modifications in this case.
I am flattered that you take such great interest in my work, thank you.
Good to confirm that it was your work on this head, I've been wondering...
I do not own this head or lathe, which is very often the case with a lot of the equipment I repair, modify, design and build, on behalf of customers from various corners of the world.
Some of it is publicly displayed because I find some aspect of the machines, or work done to it, to be particularly noteworthy, as with the suspension system and overhead modifications in this case.
I am flattered that you take such great interest in my work, thank you.
~~~ Precision Mechanical Engineering, Analog Disk Mastering ~~~
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Agnew Analog Reference Instruments: http://www.agnewanalog.com
Re: Presto MRC-16 Variable Pitch and Automation Project
You're consistently behind me. Why I would care???
Just pointing out the obvious professor.
If you actually would show the serial I could confirm the work. Glad you take so much interest in mine
My day job...
Written by: Neal Andrew Emil Gustafson
For: Musician's Friend
Link: https://thehub.musiciansfriend.com/behind-the-brand/dangerous-music-s-todd-mariana-discusses-sustainable-product-design?fbclid=IwAR2EFmmB02W0iFRKF7Qqxb5jdhWFR2AxMpfZlRjPiTNuefILpTAIOKV2YNM
Just pointing out the obvious professor.
If you actually would show the serial I could confirm the work. Glad you take so much interest in mine
My day job...
Written by: Neal Andrew Emil Gustafson
For: Musician's Friend
Link: https://thehub.musiciansfriend.com/behind-the-brand/dangerous-music-s-todd-mariana-discusses-sustainable-product-design?fbclid=IwAR2EFmmB02W0iFRKF7Qqxb5jdhWFR2AxMpfZlRjPiTNuefILpTAIOKV2YNM
You do not have the required permissions to view the files attached to this post.
Cutting, Inventing & Innovating
Groove Graphics, VMS Halfnuts, MIDI Automation, Professional Stereo Feedback Cutterheads, and Pesto 1-D Cutterhead Clones
Cutterhead Repair: Recoiling, Cleaning, Cloning of Screws, Dampers & More
http://mantra.audio
Groove Graphics, VMS Halfnuts, MIDI Automation, Professional Stereo Feedback Cutterheads, and Pesto 1-D Cutterhead Clones
Cutterhead Repair: Recoiling, Cleaning, Cloning of Screws, Dampers & More
http://mantra.audio
Re: Presto MRC-16 Variable Pitch and Automation Project
Todd, theres no call to be so rude. It indicates to me that you are very unsure of yourself.
Re: Presto MRC-16 Variable Pitch and Automation Project
Great job by Jesus! Here is the result
- variable pitch
- 33/45 direct drive motor
- electronic head lift/drop
- stylus heating
- possibility to install probably any head, just needs an adapter
- oil dashpot
- additional button to increase LPI on-the-fly for the louder parts if needed
- kind of built-in microscope stand on the top of the lathe
i can definitely say this is not a Presto anymore
- variable pitch
- 33/45 direct drive motor
- electronic head lift/drop
- stylus heating
- possibility to install probably any head, just needs an adapter
- oil dashpot
- additional button to increase LPI on-the-fly for the louder parts if needed
- kind of built-in microscope stand on the top of the lathe
i can definitely say this is not a Presto anymore
You do not have the required permissions to view the files attached to this post.